Selective Dimerization of Ethylene to 1-Butene with a Porous Catalyst
Author(s)
Metzger, Eric Daniel; Brozek, Carl Kavanaugh; Comito, Robert J; Dinca, Mircea
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Current heterogeneous catalysts lack the fine steric and electronic tuning required for catalyzing the selective dimerization of ethylene to 1-butene, which remains one of the largest industrial processes still catalyzed by homogeneous catalysts. Here, we report that a metal–organic framework catalyzes ethylene dimerization with a combination of activity and selectivity for 1-butene that is premier among heterogeneous catalysts. The capacity for mild cation exchange in the material MFU-4l (MFU-4l = Zn[subscript 5]Cl[subscript 4](BTDD)[subscript 3], H[subscript 2]BTDD = bis(1H-1,2,3-triazolo[4,5-b],[4′,5′-i])dibenzo[1,4]dioxin) was leveraged to create a well-defined and site-isolated Ni(II) active site bearing close structural homology to molecular tris-pyrazolylborate complexes. In the presence of ethylene and methylaluminoxane, the material consumes ethylene at a rate of 41,500 mol per mole of Ni per hour with a selectivity for 1-butene of up to 96.2%, exceeding the selectivity reported for the current industrial dimerization process.
Date issued
2016-02Department
Massachusetts Institute of Technology. Department of ChemistryJournal
ACS Central Science
Publisher
American Chemical Society (ACS)
Citation
Metzger, Eric D. et al. “Selective Dimerization of Ethylene to 1-Butene with a Porous Catalyst.” ACS Central Science 2.3 (2016): 148–153. © 2016 American Chemical Society
Version: Final published version
ISSN
2374-7943
2374-7951